Morphology and molecular phylogeny of Oxytricha seokmoensis sp. nov. (Hypotrichia: Oxytrichidae), with notes on its morphogenesis |
| |
| Institution: | 1. Department of Biological Sciences, Inha University, 100 Inha-ro, Nam-gu, Incheon, 22212, Republic of Korea;2. Restoration Assessment Team, Research Center for Endangered Species, National Institute of Ecology, Gowol-gil 23, Yeongyang-gun, Gyeongsangbuk-do, 36531, Republic of Korea;1. Laboratory of Protozoology, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Science, South China Normal University, Guangzhou, China;2. Institute of Microbial Ecology and Matter Cycle, School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China;3. Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China;1. Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China;2. State Key Laboratory of Marine Environmental Science, Institute of Marine Microbes and Ecospheres, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China;3. Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China;4. Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China;5. Department of Life Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, UK;6. Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China;1. Division of Life Sciences, Korea Polar Research Institute, Incheon 21990, South Korea;2. Department of Biological Sciences, Inha University, Incheon 22212, South Korea;3. Institute of Life Science & Natural Resources, Korea University, Seoul 02841, South Korea;4. Department of Biology, Gangneung-Wonju National University, Gangneung 25457, South Korea;5. Consulting Engineering Office for Ecology, Radetzkystrasse 10, 5020 Salzburg, Austria;1. Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China;2. Marine College, Shandong University, Weihai 264209, China;3. Department of Biological Sciences, University of Ulsan, Ulsan 44610, Korea;4. Department of Biological Sciences, Boise State University, Boise 83725, USA;5. Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Science, South China Normal University, Guangzhou 510631, China;1. Department of Biology, Gangneung-Wonju National University, Gangneung, South Korea;2. Consulting Engineering Office for Ecology, Radetzkystrasse 10, 5020 Salzburg, Austria;1. Laboratory of Protozoological Biodiversity and Evolution in Wetland, College of Life Sciences, Shaanxi Normal University, Xi’an 710119, China;2. Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China;3. Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia |
| |
| Abstract: | A new hypotrichous ciliate, Oxytricha seokmoensis sp. nov., was discovered in a soil from a forest in South Korea and described based on the observations of living and stained specimens. In addition, phylogenetic analyses were performed using the small subunit ribosomal RNA (18S rRNA) gene sequence. Morphologically, the new species is similar to the O. granulifera-complex in terms of ciliary structure and arrangement of cortical granules, but dorsal kineties 3 and 4 (not completely separated vs. separated) and macronuclear nodules in the cyst (separated vs. fused) differ. Oxytricha seokmoensis is most similar to O. pulvillus, but can be distinguished by the number of adoral membranelles (30–40 vs. 23–27), contractile vacuole (present vs. absent), number of left (27–37 vs. 17–25) and right (27–35 vs. 18–23) marginal cirri, and lepidosomes on the cyst surface (present vs. absent). In a phylogenetic tree, O. seokmoensis is distinctly separated from the O. granulifera clade, but is sister to the Paroxytricha clade. In addition, O. seokmoensis and P. longigranulosa have the smallest genetic difference (d = 0.015, 23 of 1579 nt difference). This close relationship is supported by incomplete dorsal kinety 3 fragmentation and separated macronuclear nodules in resting cysts. |
| |
| Keywords: | Dorsal kineties Morphogenesis Resting cyst South Korea Terrestrial 18S rRNA gene |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
